Service manual

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NO
YES
NO
YES
NO
YES
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Diagnosis Flow 6
Replace the main PC board of the
outdoor unit.
Correct the connecting wires of the
outdoor multi and then reset the
power supply.
Replace the main PC board of the
outdoor unit.
Correct the connecting wires of the
outdoor multi and then reset the
power supply.
Replace the main PC board of the
outdoor unit.
Correct the connecting wires of the
outdoor multi and then reset the
power supply.
Diagnosis Flow 7
Diagnosis Flow 8
Check the
connection status of one of
the connecting wires of Outdoor Multi.
Check if the wiring is broken or
disconnected.
YES
NO
Correct the manual address
settings.
(For detail, refer to information in
the "AirNet Installation Manual".)
Are
manual address
settings (of the slave units 1 and 2)
correct in order to connect the
AirNet?
In
the connection
status of the outdoor
multi, check if more than 4 outdoor
units are connected.
Check the
connection status of the
connecting wires of outdoor multi.
Check if the wiring has any connection error
or broken, or is about to be
disconnected.
Check 3
Check 3
Check 3 Check 4
Check 4
Check 4